[gnome-music/freeze-break] Runtime check for libnotify

[Vadim Rutkovsky <vrutkovsky src gnome org>]

commit a09726d0986b8ba2162578b8d38ea1b298d10bae
Author: Vadim Rutkovsky <vrutkovs redhat com>
Date:   Thu Sep 12 11:46:14 2013 +0200

    Runtime check for libnotify

 gnomemusic/notification.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gnomemusic/notification.py b/gnomemusic/notification.py
index c17bfc7..6055842 100644
--- a/gnomemusic/notification.py
+++ b/gnomemusic/notification.py
@@ -121,7 +121,7 @@ class NotificationManager:
     def _set_actions(self, playing):
         self._notification.clear_actions()
 
-        if len(self._notification) > 4:
+        if len(self._notification.add_action.get_arguments()) > 5:
             self._notification.add_action('media-skip-backward', _("Previous"),
                                           self._go_previous, None)
             if playing: